Stress in Health and Disease

one that remains poorly understood. In fact, the first positive reports on infectious cause of cancers linked parasites, liver flukes, and Schistosoma with specific human cancers. Ironically, the Danish scientist JohannesA.G. Fibiger won the Nobel Prize for Physiology or Medicine in 1926 for his investigations incriminating the nematode Ganglyonema neoplasticum in rat tumors, although his results have not been confirmed independently. Globalization, coupled with increases in human migration, means that more and more humans will be competing for space and resources with wild populations of animals that harbor infectious agents. Such encounters have the potential to result in hitherto unknown human diseases, including cancers. This book will serve as a useful reference in understanding some of these infectious agents and their role in development of cancer.